<https://hotspringspasandpooltables2.com/product/water-care/bioguard/5-way-test-strips/>
<http://schema.org/description>
"BioGuard 5-Way Test Strips show total bromine, free chlorine, pH, and total alkalinity and total hardness levels in pools and spas."
<https://hotspringspasandpooltables2.com/product/water-care/bioguard/5-way-test-strips/>